Draftless ventilated window



Oct. 30, 1928.

J. EHARDT ET AL DRAFTLE SS VENTILATED WINDOW Filed Sept. 21, 1925 2 Sheets-Sheet 1 1977' U/E /I/EA Oct. 30, 1928. 1,689,522

J. EHARDT ET AL DRAFTLESS VENTILATED WINDOW Filed sept. 21, 1925 2 Shoets-She et Patented Oct. 30, 1928.

UNITED STATES PATENT OFFICE.

JOHN EHARDT AND LUDWIG STARK, OI CHICAGO, ILLINOIS; SAID LUDWIG STARK AS- SIGNOR TO IRENE S. STARK, OF CHICAGO, ILLINOIS.

DRAFTLESS VENTILATED WINDOW.

Application filed September 21, 1925.

This invention relates to improvements in draftless ventilating wlndows, and has for one of its principal objects the provision of a window which is substantially in the form of the usual sliding window, but arranged in such a manner that ventilation may be had without draft.

One of the important objects of this invention is to provide, in a draftless ventilating window, the combination of means for so fastening the window without the use of looks as to render the same substantially burglarproof.

Another important object of this invention is to provide a draftless ventilating window comprising two window sashes or the like, slidable with respect to each other, whereby both the inner and outer surfaces of the win-- dows may be washed or cleaned from the inside of the room.

Still another and further important object of this invention is the provision, in a draftless ventilating window, of means whereby the flow of air for ventilation purposes through the open window may be regulated and controlled as desired, and without any fear of rain, snow, or the like entering through such opening.

Other and further important objects of the invention will be apparent from the disclosures in the accompanying drawings and following specification.

The invention, in a preferred form, is illustrated in the drawings and hereinafter more fully described.

In the drawings:

Figure 1 is a vertical elevation of the improved draftless ventilating window of this invention.

Figure 2 is a perspective view showing in detail the construction of the locking and ventilation providing elements.

Figure 3 is a vertlcal sectional view illustrating the position of the two window sashes with the lower sash open to provide ventilation.

Figure 4 is a perspective view showing the windows open for ventilating purposes and in a position somewhat similar to that shown in Figure 3, with the exception that more ventilation is provided for over the upper edge of the lower sash and the upper window itself is lowered to provide an outward draft of heated air.

Serial No. 57,760.

Figure 5 is a horizontal sectional view taken on the line 5-5 of Figure 2.

Figure 6 is a sectional view taken on the line 66 of Figure 2.

Figure 7 is a perspective view illustrating the position of the lower window when reversed for purpose of washing its outer surface.

Figure 8 is a similar view illustrating the respective positions of the windows when the upper sash is reversed for washing purposes.

Figure 9 is a detail view illustrating the construction of the guides for the sash cords and also the locking notch for the lower win dow sash.

Figure 10 is a detail perspective View illustrating a slight modification of the locking means.

Figure 11 is a detail perspective view illustrating still another modification of the locking means.

Figure 12 isa detail view, parts being provided. An operating handle or similar element 20 is aflixed to the upper inner face of the lower sash 18.

As best shown in Figure 2, the lower sash 18 is adapted to be laterally shifted from its operating groove 22 into the operating groove 24 of the upper sash, and an offset joint 26 is provided for a tight fit between the lower edge I of the upper sash and the upper edge of the lower sash. A horizontal groove 28 is provided in the bottom of the window frame for receiving the lower edge of the sash 18. In order to retain the lower sash 18 in this locked position means is provided in the form of a hinged element 30, which, as best shown in Figure 2, will, when in closed position, fit closely against the inner face of the sash 18, thereby preventing its movement in any direction. This hinged element 30 is in turn hingedly mounted on a similar co-operating hinged element 32, itself in turn being hinged to the window frame 15. A hinge in the nature of a piano hinge is provided for each of these joints, but, as shown in Figure 11, a double hinge 3a of any ordinary or desired construction may be substituted for the piano hinge.

Qperating handles 86 are provided on the hinged element 30 and at the end of each handle is a locking button or the like 88 adapted to co-operate with a corresponding socket 10 mounted on the window frame 15. The operation of this locking element is best shown in Figure 14.

The sashes 16 and 18 are counterbalanced by weights operating in the usual manner on sash cords 12 passing over pulleys 4 1, and, if desired, a single weight 16 may be used sus pended in turn upon a, common pulley 18, as best shown in Figure 13. As best shown at 50 in Figure 9, the dividing element between the grooves for the sash cords is cut away and curved at the bottom so as to allow for a ready shifting of the lower sash 18 together with its attached cord 42 into line with the groove 24 of the upper'sash 16. This position is illustrated in section in Figure 3.

In order to permit of reversing the windows so that their outer surfaces may be cleaned from the inside, the hinged members 30 and 32 are completely opened into the position shown in Figures 7 and 8, thereby allowing first the lower sash 18 to be pulled out-- wardly from the top and then have its lower end raised into the position shown in Figure 7, thereby bringing the outer surface inward and permitting of the ready washing or cleaning of the same. In order to clean the outer face of the upper window 16 the lower sash 18 is pushed upwardly into the position shown in Figure 8 and the upper sash 16 lowered to the bottom of its groove, after which its upper edge is pulled inwardly and the lower edge then raised into the posit-ion shown in F igure 8, whereby the outer surface is turned inwardly, allowing for its ready cleaning. In order to allow of a turning of the sashes with. relation to the sash cords a swivel joint is provided, as shown in Figure 12, the end of the cord 12 being mounted in a suitable socket 52, which in turn comprises the part of an L- shaped element, the inner end 54 of which is rotatably positioned in a suitable bearing and maintained in position by a plate 56' and screws 58.

In order to provide ventilation the hinged member 30 may be opened wit-h respect to its co0perating member 82, and the upper edge of the lower sash tilted inwardly into the position shown in Figure 3, thereby allowing for ventilation through the opening provided. If further ventilation is desired the hinged men'iber 32 may be further opened, as shown in Figure 4, and locked in such position as shown in Figure 1 1, when the upperedge of the sash 18 can be brought inwardly to provide a. wider opening, and further, the upper sash 16 may be lowered in either case to provide an outward draft of heated air.

A slight modification of the hinged locking elements and 32 is shown in Figure 10, wherein a single hinged locking element only is provided as at 60. This, of course, allows for a suitable locking of the lower sash and also provides for ventilation and reversing of the windows for washing purposes, but does not allow of the use of a locking element such as shown in Figure 14-.

It will be obvious that herein is provided a draftless ventilating window, which, in addition to allowing for ventilation without draft, further presents a practically burglarproof construction and also one whereby the outer faces of the windows may be washed from the inside, eliminating accidents. Further, the construction is such so as to be economically manufactured and can be readily applied to existing windows with a slight change and without much expense.

VVe are aware that many changes may be made and numerous details of construction varied throughout a wide range without departing from the principles of this invention, and we therefore do not purpose limiting the patent granted hereon otherwise than as necessitated by the prior art.

e claim as our invention:

In. combination with a window frame, an upper sash pivotally and slidably mounted in said frame, the upper edge of said upper sash extending substantially to the upper edge of said upper frame when said upper sash is in its uppermost position, a lower sash pivotally and slidably mounted in the frame, supporting slides for the sashes, sheets of transparent material disposed in both sashes, and'means for locking said upper'and lower sashes in single slide when in closed position, said looking means comprising a hinged retaining element normally forming a portion of a slide and adapted for hinged motion to close said slide to lock the sashes, said hinged element secured to the lower portion of said frame.

In testimony whereof we ailix our signatures.

JOHN EHARDT. LUDVVIG STARK. 

